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With the development of electric power system, the relay protection is developing very rapidly, and electric power system relay protection demand also more and more high, this paper introduces a set of general microcomputer relay protection analysis and simulation verification system. System USES the object-oriented programming technology, realize the general analysis and simulation check function. Analysis part includes data processing, fundamental component, harmonic component, sequence component, impedance trajectory and fault analysis, function design. The simulation check part adopts modular design and database system combination of technology, using the COMTRADE format wave record data from simulation system and DDRTS simulation data as input, through the structure and the actual relay protection device consistent soft protection, to realize the protection action process and results of the simulation.
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